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<<Why is OOO a dead-end approach? If there's parallelism to extract in a program, then if a compiler can find it, an OOO core can find it just as well. >> That's clearly false, since the OOO core has to do things on the fly in very limited time, while a compiler can do extensive analysis without such time constraints. Now of course the question of whether EPIC architectures + clever compilers can in *fact* do better than OOO cores remains to be seen. It is fascinating that the competition between Intel and AMD moves away from who can build a better ia32 to a competition between two radically different architectural approaches.
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